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How to Install a Fan Motor (Low Voltage) in the Brother MFC-8460 Multifunction Center

To install a new fan motor in your Brother MFC-8460 Multifunction Center, you must switch the machine off, and then unplug the power cord. Next, you must remove the following components from the multifunction center (in the provided order): drum unit and toner cartridge assembly, DX feed assembly, and paper tray. After that, you must remove the screws from the sides of the right cover, and then slide the right cover forward to remove it. In the next step of the replacement procedure, you must disconnect the fan motor harness, and then pull the fan motor out of the Brother MFC-8460 Multifunction Center. Finally, you must unpack the new fan motor, and then install it by executing the current procedure in reverse order.

When do I Replace an LCD Assembly in the Brother MFC-8460 Multifunction Center?

The Brother MFC-8460 Multifunction Center is equipped with a 22 characters x 5 lines LCD screen (a component of the panel unit). You should replace the LCD assembly if the LCD remains blank after powering on. Before proceeding with the replacement the LCD assembly, you should perform the following troubleshooting procedures/actions/methods:

You must verify that the machine is switched on

You should check the connections (harness, connector, etc.) between main PCB and panel PCB

You should check the harness between main PCB and low-voltage power supply PCB LCD

You should also test the LCD by executing [Operation check of LCD <CODE 12>]. You have to press [1] – [2] – [Start] – [Start] – [Start] to start the LCD test procedure.

How to Install an LCD Assembly in the Brother MFC-8460 Multifunction Center

In the initial step of the replacement procedure, you must remove the panel unit from the Brother MFC-8460 Multifunction Center (Please refer to ‘’How to Install a Panel Unit in the Brother MFC-8460 Multifunction Center’’), and then unplug the connector of the panel PCB from the panel unit. After that, you must remove the four screws that secure the ALFB panel to the panel unit, and then detach the ALFB panel by releasing the two hooks. Now, you must unplug the connector of the backlight LED module and the cable of the LCD from the panel PCB assembly. In the next step of the replacement procedure, you must release the four hooks of the panel PCB assembly, and then remove the panel PCB assembly from the panel unit. Once the panel PCB assembly is removed, you must detach the printed rubber key from the panel unit, and then release the two hooks on the panel cover to remove the LCD cover and the LCD assembly from the panel unit. Finally, you must unpack the new LCD assembly and then install it by executing the current procedure in reverse order.

How to Install an ADF Motor in the Brother MFC-8460 Multifunction Center

You must make sure that the Brother MFC-8460 Multifunction Center is switched off, and then unplug the power cord. Next, you must remove the drum unit and toner cartridge assembly, the DX feed assembly, and the paper tray from the main unit. After that, you must turn the document cover upside down, and then detach the ADF cover assembly from the main unit. Now, you must release the latch of the left ADF cover, and then detach the left ADF cover by removing the two mounting screws. In the next step of the replacement procedure, you must remove the right ADF cover, and then unplug the seven connectors from the ADF relay PCB. Once you have unplugged the seven connectors, you must disconnect the ADF motor harness from the ADF motor, and then remove the fixing screw of the ADF FG harness. Next, you must remove the screw from the underside of the document cover, and then remove the four screws from the ADF chute assembly. At this stage of the procedure, you must release the hook of the ADF chute assembly, and then remove the ADF chute assembly from the main unit. Once the ADF chute assembly is removed, you must remove the two screws that secure the ADF motor to the main frame of the Brother MFC-8460 Multifunction Center, and then remove the ADF motor. Finally, you must unpack the new ADF motor, and then install it by executing the current procedure in reverse order.

When do I Replace a Laser Printhead Unit in the Brother MFC-8460 Multifunction Center?

The lifespan of a new laser printhead unit is approx. 100,000 prints. You should replace the installed laser printhead unit when/if any of the listed messages, error codes, and print quality problems appears.

[REPLACE LASER] – The Brother MFC-8460 Multifunction Center monitors the status of all periodical replacement parts. The machine will display the [REPLACE LASER] message when the installed laser printhead unit reaches the end of its useful life. You should replace the installed laser printhead unit when the above message appears.

[71] – The Brother MFC-8460 Multifunction Center has detected that the scanner motor does not synchronize with the reference clock, which indicates that the installed laser printhead unit is defective. Please replace the installed laser printhead unit with a new one.

[72] – The Brother MFC-8460 Multifunction Center does not detect the beam signal. You must make sure that the laser printhead unit is installed correctly, and then restart the machine. Please install a new laser printhead unit if the problem persists.

White streaks appear vertically on the printout – You should try to improve print quality by cleaning the scanner window. Please replace the installed laser printhead unit if print quality does not improve.

Image distortion – You must make sure that the installed laser printhead unit is properly secured. Please replace the laser printhead unit if the problem persists.

How to Install a Laser Printhead Unit in the Brother MFC-8460 Multifunction Center

In the initial step of the replacement procedure, you must switch the Brother MFC-8460 Multifunction Center off, and then unplug the power cord from the AC socket of the machine. Next, you must remove the drum unit and toner cartridge assembly, the DX feed assembly, the paper tray, and the right cover from the machine. After that, you must remove the pin of the air duct from the main frame, and then slide the air duct to the right in order to remove it from the main unit. Now, you must remove the five screws that secure the exhausted laser printhead unit to the main frame, and then remove the protective film from the flat cable that connects the laser printhead unit to the core. Once the protective film is removed, you must unplug the flat cable from the core, and then remove the exhausted laser printhead unit from the Brother MFC-8460 Multifunction Center. Please do not touch the laser scanner window directly. In the next step of the replacement procedure, you must unpack the new laser printhead unit, and then install it by executing the current procedure in reverse order. Finally, you must reset the life counter of the laser printhead unit by selecting [Parts Replacement] – [Reset Laser].

When do I Replace an NCU PCB Assembly in the Brother MFC-8460 Multifunction Center?

You should replace the NCU PCB assembly if:

The Brother MFC-8460 Multifunction Center cannot receive faxes – You must make sure that the correct [Receive mode] settings have been selected. Please replace the NCU PCB assembly if the problem persists.

The dialing function does not switch between Tone and Pulse – You should check the condition of the PCB – NCU PCB harness and replace it if necessary. Please replace the NCU PCB assembly if the problem persists.

How to Install an NCU PCB Assembly in the Brother MFC-8460 Multifunction Center

In the initial step of the replacement procedure, you must turn the machine off, and then unplug the power cord. After that, you must remove the drum unit and toner cartridge assembly, the DX feed assembly, the paper tray, and the panel-cover assembly from the Brother MFC-8460 Multifunction Center. Now, you must unplug the connector of the scanner motor harness from the driver PCB, and then unplug the cable of the photo interrupter and FFC from the main PCB. In the next step of the replacement procedure, you must remove the two screws that secure the scanner unit assembly to the main frame, and then remove the scanner unit assembly. Once the scanner unit assembly is removed, you must unplug the connector of the NCU harness from the main PCB, and then detach the NCU FG harness assembly ALFB by removing its fixing screw. Next, you must remove the two screws securing the NCU unit into place, and then remove the NCU unit from the machine. After that, you must remove the screw from the top side of the NCU shield plate, and then pull the NCU shield plate out of the main unit. Now, you must disconnect the NCU harness from the NCU PCB assembly, and then remove the screws from the top side of the NCU PCB assembly. Finally, you must remove the damaged/defective NCU PCB assembly, and then install the replacement component by executing the current procedure in reverse order.

MFC-8460 SUPPORT FLAP

Brother MFC-8460 Support Flap (OEM)

Price:
$3.89

844359

Product Description

Support Flap for Brother MFC-8460 Laser Printer, manufactured by Brother

How to Install a CCD Module in the Brother MFC-8460 Multifunction Center

To replace the CCD module of your Brother MFC-8460 Multifunction Center, you must turn the machine off, and then unplug the power cord. After that, you must remove the drum unit and toner cartridge assembly, the DX feed assembly, the paper tray, and the panel cover assembly from the main unit. Now, you must detach the scanner unit assembly from the main frame, and then remove the six screws that fix the top cover assembly into place. Once the top cover assembly is removed, you must loosen the two screws of the tension roller of the belt, and then remove the belt from the pulley assembly. In the next step of the replacement procedure, you must pull the guide shaft out of the CCD module, and then remove the belt support rubber by pulling it straight up. After that, you must detach the belt from the CCD module, and then remove the adhesive tape from the FFC cable. Next, you must unplug the FFC cable from the CCD module, and then remove the CCD module from the Brother MFC-8460 Multifunction Center. Finally, you must unpack the new CCD module, and then install it by executing the current procedure in reverse order.